29 lines
767 B
C
29 lines
767 B
C
#ifndef _RINGBUFFER_H
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#define _RINGBUFFER_H
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#include <stdint.h>
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#include <avr/interrupt.h>
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#define RB_BITS uint8_t
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typedef struct {
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volatile RB_BITS read_pointer;
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volatile RB_BITS write_pointer;
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volatile RB_BITS size;
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volatile RB_BITS data[];
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} ringbuffer;
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void ringbuffer_init(ringbuffer *buf, RB_BITS bufsize);
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RB_BITS ringbuffer_canread(ringbuffer *buf);
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RB_BITS ringbuffer_canwrite(ringbuffer *buf);
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uint8_t ringbuffer_readchar(ringbuffer *buf);
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uint8_t ringbuffer_peekchar(ringbuffer *buf, RB_BITS index);
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RB_BITS ringbuffer_readblock(ringbuffer *buf, uint8_t *newbuf, RB_BITS size);
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void ringbuffer_writechar(ringbuffer *buf, uint8_t data);
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RB_BITS ringbuffer_writeblock(ringbuffer *buf, uint8_t *data, RB_BITS size);
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#endif /* _RINGBUFFER_H */
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